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Specimen examined : South Sumatra, Mt Dempo 1,400 m asl, August 9, 1916 E.
Jacobson and Ajoeb 443 BO.
4. Epigeneium elongatum Blume Summerh. Plate 3
Desmotricum elongatum Blume, Bijdr. 1825 552. Katherinea elongata Blume A.D. Hawkes, Lloydia, 19 1956 95.
Epigeneium elongatum Blume Summerh. comb.nov., Kew Bull. 1957 261. Epigeneium triflorum var. elongatum Blume J.B. Comber, Orchid of Java
1990 245.
Rhizome long, creeping, 3
– 6 mm in thickness, covered by 12 layered,
imbricate, brown cataphylls, ovate to long ovate, acute to acuminate. Pseudobulb
oblongoid, with four sharp angles, about 3.2 – 8.9 cm apart on the rhizome, shiny
olive green. Leaves two on each top of the pseudobulb, elliptic to long elliptic,
obtuse, shallowly obliquely bilobe, petiole 0.5
– 1 cm, coriaceous. Inflorescence
from the top of pseudobulb between two leaves, 1 on each pseudobulb, peduncle 9.1-10.7 cm long with 2 sterile bracts, rachis 1.3-5 cm long and bring 2-8 flowers.
Flower greenish yellow; dorsal sepal 1.25 x 0.5 cm, elliptic, obtuse; lateral sepal
1.3 x 0.65 cm, lanceolate, acute; petal 1.3 x 0.35 cm, long elliptic to near spathulate; labellum trilobed, 1.05 x 1 cm, with three calli on the disc, the center
one is longest, the side lobes 0.7 x 0.5 cm, erect, the mid-lobe is rounded, with very short claw, the margin thickened.
Distribution : Mt. Gede West Java.
Habitat : Primary mountain forest from 1,500 m asl, flowering time: September,
October.
Note : J.B Comber in Orchid of Java placed this species as variation of E.
triflorum var. elongatum but he also suggested to elevated this variety into species rank. Base on Summerhayes 1957, Epigeneium elongatum were found in Java
formerly known as Dendrobium elongatum . After observation it’s agreed to
separate this species from E. triflorum. There are some characters that need to be considered: vegetative parts which show great differences on the shape of
pseudobulb which is ellipsoid with sharp angle, leaves mostly elliptic or long
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elliptic. Flower smaller than Epigeneium triflorum var triflorum, dull yellow with dark red spot on the labellum. Apex of the mid-lobe is rounded and its margin
thickened and this character very obvious on living specimen.
Specimen examined : West Java, Mount Gede, M. Fleicher 38 BO;
Tjibeureum, Mt. Gede, 1,600 m asl, September 17, 1953, W. Meijer 1826 BO.
5. Epigeneium exilifolium Ames Schweinf. Garay Romero Plate 4
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